Cutting-off mechanism for tube-machines.



B. N. PA GELSEN. I CUTTING OFF MECHANISM FOR TUBE MACHINES.

APPLIOATION FILED MAY 6, 1912.

1,033,454. Patented July 23, 1912.

3 SHBETSSHEET 1.

WITNESSES." l/Vl/E/VTOI? E. N. PAGBLSEN. CUTTING OFF MECHANISM FOR TUBE MACHINES;

APPLICATION IILED MAY 6, 1912. 7

1,033,454, Patented July 23, 1912.

3 SHEETS SHEET 2.

fig: 5

WITNESSES. IIVVENTOI? E. N. PAGELSEN. CUTTING OFF MECHANISM FOR TUBE MACHINES. APPLICATION FILED MAYG, 1912.

1,033,454. Patented July 23,1912.

3 SHEETSSHBET 3.

WI 71 168858: IN VE/V 7' 0H EDWARD N. ?AGELSEN, OF DETROIT, MICHIGAN.

CUTTING-OFF nincnanrs'n roe TUBE-MACHINES.

Specification of Letters Patent.

Patented July 23,1912.

Application filed May 6, 1912. Serial No. 695,373.

To 'all whom 2'1 may concern Be it known that I, EDWARD N. PAGEL- SEN, a citizen of the United States, and a resident of the city of Detroit, in the county of \Vayne and State of Michigan, have invented a new and Improved Cutting-OE Mechanism for Tube-Machines, of which the following is aspecification.

This invention relates to means for cutting into predetermined lengths the tubes formed on machines constructed so as to spirally wind a plurality of bands of proper material into tubes of the desired size, and its object is to provide a cutting-oil mechanism which shall be simple in construction, eitective in operation, and which shall be controlled by the tube as it is being wound.

This invention comprises a revoluble arbor, a cutting tool slidably mounted thereon but revoluble therewith, bearings and a carriage for said arbor, pneumatic means for moving the cutting tool toward and from the tube, and pneumatic means for sliding the tool on the arbor back to start, ing position after a tube has been severed.

It further consists in combination with said cutting-oil mechanism and pneumatic means for positioning the same, of proper valves for controlling the pneumatic devices, of means actuated by the tube when it has reached a proper length to position one of the valves to cause the arbor to be moved toward the tube, and means connected to the arbor-supporting means, to cause the cutter to be moved longitudinally of the arbor-to normal position after the arbor has been moved back from the tube.

Machines for spirally winding bandsof paper, straw-board and similar material into tubes, are well known, and the production of spirally-wound tubes has become large. As these machines are continuous in their operation, it is necessary to cut the tube into proper lengths so that they may be further operated u on by other machines. These tube mac ines, as a rule, are so constructed that the finished tube moves longitudinally and at the same time revolves at considerable speed. It istherefore necessary that the cutting-off mechanism be so designed that the cutting tool may freely move longitudinally with the tube during the cutting operation. Where springs or weights are employed to return the cutterto its normal position after a secti n of tube has been severed, ammo usually roughens or chews up the tube ma; terial it the point where it engages. To preven this, it is necessary that the tool be permitted to'move longitudinally with the tube with the least possible restraint, and that the tool be withdrawn suddenly from the tube after the cutting has been completed.

In the accompanying drawings Figure 1 is a plan and Fig. 2 is a rear end elevation of this improved cutting-oft mechanism. Fig. 3 is a section and Fig. 1 an elevation of one of the controlling valves. ,Fig. 5 is a central, longitudinal. section of the saw arbor. Fig. 6 is a vertical, transverse sec tion of the machine through the cylinder for moving the cutting tool toward and from the tube. Fig. 7 is a central, horizontal section of the valve chamber of this cylinder, the valve, being shown in-plan.

Fig. 8 is a front end elevation of the mecli; anism on a larger scale than Fig.2. Fig. 9 is an elevation on a larger scale of the arm in the path of the tube. Fig. 10 is an elevation of the arm which actuates the main valve shown in Fig. 7. I

Similar reference characters refer to like parts throughout the several views.

This cutting-oft mechanism is adapted to be used with any type of machine which produces tubing by spiral winding. The winding mandrel l is shown in Fig. 8 and the tube 2 thereon is also shown in Figs. 1' and 2. The base of this machine is indicated in Figs. 2 and 8 and comprises. a top 3 on which the cutting-oft mechanism is mounted. Any other desired support'may 1;

be employed, that shown being thatyof the-:3,

1910. While any desired means may be em- 1 Osborn Patent No. 945,862, dated Jan. 11,

ployed to drive the cutting tool of this cutting-0ft mechanism, 1 have shown the shaft C of this patent and the pulley 59 thereon.

Mounted on the top 3 is a frame having a bottom plate 4, sides 5, provided with slots 6 and a projecting plate 7 to receive the operating cylinder. An arbor 8 is revoluble in bearings 9, carried by the arms 10 which are connected to the slidable plate 11,-whichf plate has projections 12 which extend through the slots 6. This plate, arms and bearings constitute the arbor carriage. This carriage is slidable toward and from the tube 2. Secured to the arbor is a pulley l4 aroundwhich extends a belt 15, which also extends around the pulley 59 and the station- Q mea re-i ary idler 16, mounted on the pin. 17'. An

arm 18 is pivoted on the pin 19 and carries: a pin 90 on which is revoluble the idler 21, held against the spring By these or other desirable means the belt is kept tight durii'ig the time the saw moves toward and From the tube Compressed air may be supplied from any desired source by means of a main 24', to which connects a. pipe 25 which also connects to the valve chamber .26. more fully shown in Fig. 7. Ti). passages 27 and extend from the valve chamber to the ends of the cylinder 29, mounted on the plate 7, which cylinder is provided with heads 30 and 31, a pieton 32, and a piston rod 5-3??- which has a pin dd at its outer end that extends through the flanges 35 on the arbor carriage. The valve chamber ie open at its ends so that the exhaust may escape :lrccly. A. dmnb-bell valve formed by the Stem 37 and collars 38 and 715.) is slidable in the chamber, and the inlet port is never closed, so that the valve is perlexlly balanced. it. is moved to the right il by means of a connecting rod or wire it), and to the left by means of a sprii'ig l l between the ring; and the .vasher 4?. Nuts; ll on the valve stem adjust the tension of the spring.

The arbor 8 is preferably a. hollow lube, held in proper longitudinal position. by the pulley 1% and a collar 4:5. The cutting tool, me'lcrably a saw 46, is mounted on the collar 1'? and held in place by the ring 48 sci-raved onto the collar. A slot ll) in this arbor rcceivce a pin 50 carried by the collar 4.? so that the saw will revolve with the arbor at. all positions on the same.

Projecting reaiwvardly from the frame a bar 52. prcteraliily hollow which carries a standard 53 in which a cross shaft 54: is revolubly mounted. This shaft carries an arm 55, (Fig. 9) which extends down into the path of the finished tube, and preferably has. a revoluble sleeve 56 to decrease friction, the-sleeve being held in place by means of a screw 57. The arm 58, (Fig. 10) also 'secured to this shaft- M, has the outer end of the rod or wire 40 connected to it, preferably,

by the eye-bolt and the nuts 61.

The normal position of the parts is: as shown in Fig. hen the tube engages the arm and swings it outward, the arm 58 will pullfthe valve stem 37'to the position shown in Fig. 7, thus opening the passage 27 to the compressed air and connecting the passage 28 to the outside atmosphere. The piston 32, the arbor-carriage, the arbor and the cutter will at once he moved toward the tube and the cutter will engage the tube sufficiently to be carried along with the tube. l'Vhen the outer portion of the tube is sev yered, it will fall, thus releasing the arms 55 and 58 andthe valve stem, whereupon the spring 41 Will move the valve collars to the belt 15 by means of the positions indicated in. dottedlines in Fig. 7, when the passage will connect to the compressed air and the passage 27 to the outside atmosphere. a result the arbor and eaw will be moved back from the tube. The will still he. at the right end of its stroke. To return it, a cylinder (30 (Fig. 5) mounted in line with the bore. oi the arbor. In this cylinder is freely slidable the piston 6:2 to which is connected the rod and the collar (it provided with a groove (55 to receive the end of the pin 50. The piston, rod and coll a slide ouluuudly to the positions indicated in dotted lines, with the saw when that moves with the tube.

lllounted on a. side of the frame is a valve body ti! having a plug 53 to which con-- nccted a lever (59. See Figs. 1, 3 and 4-. A. pipe Tl connects this valve to the air main :H- and another pipe. connects it to the cylinder (it). in arm 72 on the carriage engages the lever (it) when the carriage is in the position shown in Fig. l and turns the plug (18 to the poaition. shown in Fig 3. Air will now rush to the outer end of the cylinder 60 and force the piston 62 and the saw back to the positions shown. in l ig. 5. The saw will thus be held at the left or normal end of is stroke during; the time it ie held away from the arbor. As soon as the carriage and saw move toward the tube. the lever 69 of this valve is; released and the spring" 74; will. turn the plug about si ty degrees. eo a5 to cut otl the supply of air and to connect the pipe T0 with the escape port 75 in the valve body. It will theretorc be seen that during the time the cutter moves with the tube, there is nothing to hinder its movements, eo that it. ran move freely and avoid injuring the tube. The movei'nents toward and from the tube can be regulated by the sizes of the small hoes through the wall of the cylinder 29. litter the cutter has performed its 'luty, it i; immediately moved away from the tube and then back to normalv position, Where it is held by pneumatic pres sure until it is again moved toward the tube, when this pressure is .iunnediately removed. Instead of the saw a disk with a sharp, smooth edge may be employed.

To steady the tube, a forked arm 7'? may be mounted on the support 52 as shown in Fig. l and in dotted lines in Fig. 2.

Many changes in the proportions and de tails of this construction may be made by those skilled in this art without departing from thespirit of my invention expressed in the claims. Thus the distance between the bearings 9 of the arbor and the length of the cylinder 60 and rod 63 may be increased to permit a proportionally longer longitudinal. movement of the cutting tool. All the. parts may be made adjustable in the usual manner to permit this mechanism to be 1 for tubes of different diameters. As

a dapteo.

saw

the weight of the arms 55 and 58 needs be but small, they will have no undesirable effect on the operation of the mechanism. The position of the guide 77 may be varied as desired.

I claim.

1. In a cutting-ofi" mechanism for tube machines, the combination of an arbor, means to revolve the same, a cutter slidable on said arbor and revoluble therewith, a'slidable carriage for said arbor, pneumatic means for moving said carriage to carry the arbor toward and from the tube, said cutter slidable on the arbor under pressure of the tube,

and pneumatic means for sliding back the cutter on the arbor to original position.

2. In a cutting-oi'f mechanism for tubemachines, the combination of an arbor, means to revolve the same, a cutter slidable on said arbor and revoluble therewith, a slidable carriage for said arbor, pneumatic means for moving said carriage to carry the arbor toward and from the tube, said cutter slidable on the arbor under pressure of the tube,

pneumatic means for sliding back the cutter on the arbor to original position, and controlling means actuated by the tube to cause the pneumatic means to move the arbor toward the tube.

In a cutting-off mechanism for tube-- valve to normal position, and means to slide.

the cutter back.to starting position on the arbor. v

4. In a cutting-off mechanism for tubemachines, the combination of a revolving arbor, a cutting tool revoluble therewith and slidable thereon under action of the tube, a

z pneumatic cylinder and piston for moving the arbor toward and from the tube, and a pneumatic cylinder and piston for moving the cutting tool on the arbor back to normal position.

5. In a cutting-oft mechanism for tubemachines, the combination of a hollow revoluble arbor, means to move the arbor toward and from the tube, a cutter slidable on said arbor and freely movable longitudinally outward by the tube, a rod slidable within the arbor, means to slide the rod inward, and

connecting means between the rod and the cutter.

6. In a eutting ofl mechanism for tubemachines, the combination of a hollow revoluble arbor, means to move the arbor toward and from the tube, a cutter slidable on said arbor and freely movable longitudinally I outward by the tube, a rod slidable within the arbor, a pneumatic cylinder mounted coaxia lly with the arbor, a piston within the cylinder connected to said rod, connecting means between the rod and the cutter whereby the cylinder and piston may return the cutter to normal position, and means to control the operation of said pneumatic cylinder and piston.

7. In a cutting-off mechanism for tubemachines, the combination of a hollow revoluble arbor, means to move the arbor toward and from the tube, a cutter slidable on the arbor and'freely movable outwardly on the arbor by the tube, and means freely movable outwardly by the cutter to move the cutter inwardly on the arbor after the arbor has been moved back from the tube.

8. In a cutting-01f mechanism for tube machines, the combination of a frame, a carriage slidable thereon, a revoluble arbor mounted on said carriage, 'a cylinder mounted on said frame, apiston therein, a rod connecting the piston to said carriage, a valve to control the flow of fluids under pressure to said cylinder, means in the path of the manufactured tube for moving the valve in one dfibction to cause the fluid to move the arbor toward the tube, a spring to return the valve to normal position to cause the fluid to move the arbor from the tube, a cutter slidable outwardly on the arbor by the tube when in engagement with the same, and means to slide the cutter inwardly to normal position. I

9. In a cutting-off mechanism for tubemachines, the combination of a hollow revoluble arbor, means to move the same toward and from the tube to be cut, a cutter slidabl e on the arbor and freely movable long1tud1-' nally out-ward by the tube, and normally inoperative means mounted co-axially with said arbor for sliding the cutter inwardly to normal position, and a controlling device for causing said cutter-sliding means to be energized when the arbor has been moved.

back from'the tube.

In testimony whereof I have signed this specification in the presenceof two subscribing witnesses.

EDWARD N. PAGELSEN. Witnesses:

VILLIAM T. HEWITT, HUGO W. Knnnvnw is. 

